#include <stdio.h>
#include <sys/types.h>
#include <netinet/in.h>

int main(){


	printf("sizeof(sockaddr)=%d\n",sizeof(struct sockaddr));
	printf("sizeof(sockaddr_in)=%d\n",sizeof(struct sockaddr_in));
	printf("sizeof(in_addr)=%d\n",sizeof(struct in_addr));
}